The Finger Gestures library is an essential component of my Unity3D toolbox. It is used in almost every project I am working on. If you don't have it yet, you really should get it and learn it! Why?

Getting consistent input schemes working across multiple platforms is hard to get right, and I bet you have much better things to worry about that writing touch and mouse input routines for your game! So, skip the drudgery and instantly enable every kind of mouse and touch gesture you might need, from a simple tap, to a two finger swipe, to pinch and rotate. Finger Gestures will save you many hours of development, it is well worth the investment.